The Estes 1/2A3-4T is a single stage model rocket engine with a short delay ejection charge for use in small, lightweight model rockets.

• Brand Name: Estes
• Product Type: Model Rocket Engines
• Color: Brown
• Number of Pieces: 4 pc
• Number in Package: 1 pk
• Length: 2 in.
• Recommended Age: 10+ yr
• Total Impulse: 1.25 N-sec
• Weight: 0.23 oz.
• Model Number: 1/2A3-4T Engines
• Max Lift Weight: 1.0 oz.
• Thrust Duration: 0.30 sec.
• Max Thrust: 1.9 lb.
• Propellant Weight: 0.07 oz.
• Diameter: 1 in.